The First 48

In Louisville, Det. Kristen Downs responds to the killing of a man shot while answering his door. Before he died he told his fianc e who did it, but his declaration leaves more questions than answers. Then in Harris County, TX, neighbors find a teenage girl in the woods, shot dead. The case takes a turn when the trail of clues leads Dep. James Cassidy to one of the victim's friends.

Miami detective, Fabio Sanchez and the homicide team investigate the murder of a man stabbed in the street. In Dekalb County, Georgia, shots are fired in broad daylight on a residential street, leaving one teenage boy dead and another critically injured.

Birmingham Detective Warren Cotton investigates the murder of three family members, including a 12-year-old girl, who were stabbed to death in their home and then burned. In Miami, Detective Ricardo John and his team are working the shooting of a young man who has been a witness in several previous homicide investigations.

In Birmingham, a 49-year-old man is beaten and shot in the middle of a housing complex in broad daylight. In a community where no one wants to be seen as "snitching," finding someone to come forward with information will be Det. Chris Anderson's biggest challenge. In DeKalb County, lead detective Chris Franklin investigates the murder of an 18-year-old male, gunned down in an apartment complex.

In Miami, lead detective TC Cepero investigates the murder of a 20-year-old male, gunned down in the middle of the street in broad daylight. With surveillance video of the suspect and possible witnesses they learn the victim may have been on the killers hit list. in DeKalb County, a 20-year-old man is shot dead while walking his girlfriend home at night.

In Harris County, a family man is shot down in his driveway. With no motive or witnesses lead investigator Deputy Juan Viramontes hopes a clue found on the victim's car can lead to the killer. And in Miami, as a family settles in for the night, gunshots erupt in their front yard. A startled mother walks outside and discovers her son shot dead.

In Miami, the Homicide Unit responds to a scene to find the 911 caller covered in blood and a 35-year-old woman brutally stabbed. And in DeKalb County, Det. Joe Renaud and his team are working the shooting murder of a 22-year-old man. With no witnesses, the team hopes piecing together the last hours of the victim's life can lead them to the killer.

In a quiet suburb of Birmingham, AL an unidentified man is found dead in an alley--the victim of a hit and run. On the scene detectives find a piece of the car that ran over the victim. In DeKalb County, a 24-year-old man is shot to death in his apartment during a drug deal. When a canvas provides no clues detectives turn to the victim's cell phone to point them in the direction of the killer.

In Harris County, Deputy Abraham Alanis is working the homicide of a 69-year-old Navy veteran. When Alanis' first big break, surveillance video of the potential perpetrator, fails to show the suspect's face, investigators take a closer at the footage and notice something big--a small detail in the video, could be a huge break for the case.

In Miami, two men are found beaten and shot behind an abandoned house. As Det. TC Cepero digs deeper into the case he unearths more than one reason the men could have been killed.

In Birmingham, Detective Chris Anderson investigates the gruesome murder of a woman who is shot to death and then set on fire. Anderson hunts down his suspects, but it's the victim's family that reveals a final, disturbing twist in the case. In DeKalb County, Detective Joe Renaud is working the homicide of a father of four, gunned down outside an apartment complex on the east side of town.

In Miami, Detectives Anthony Reyes and Manny Castillo investigate a man shot dead on a residential street. The case takes a turn when they learn that the house he was found in front of is where his ex-girlfriend lives. Then in Birmingham, a gunfight at a gas station leaves one man dead.

In Miami, a good Samaritan is shot dead while intervening in a robbery. Det. TC Cepero is forced to resort to a needle-in-a-haystack search for the getaway car, and for the homeless woman who may have seen the killer.

In Birmingham, Lead Det. Henry Lucas and the Birmingham Homicide Team are trying to solve the mystery of how a young man ended up shot in the back in the middle of a scrap yard. With no witnesses, Lucas hopes the victim's friends can lead him to the killer. In DeKalb County, Lead Det. Lynn Shuler and the Major Felony Unit are called to a motel where a woman has been found dead.

In Miami, a man is gunned down on a quiet city sidewalk. A mysterious car leads detectives on the trail of a suspect with a violent past.

When a Dallas man is found shot to death in an apartment complex, the homicide team must rely on the eyes of the community to help solve the case.